main.m

拉哥朗日插值算法的实现,MATLAB编写,仅供参考.

%% it is main function to realize lagrange interpolation%%
%% the vector X is a collection of interpolation points %%
%% the vector F is a collection of interpolated function values%%
%% Obviously,the vector X should be the same size as F  %%
%% **************the author:程剑光**********************%%
%% ************[e-mail]*******************%%
%% this programme copyrighted by the physics and %%
%% tele-communication school in scnu,  2006.4.17 %%
%% if you have some ways to improve this arithmetic, %%
%% please make contact with me, thank you very much! %%
%% FF the the result of this programme %%
clear;
clc;
X=[4,6.25,9,16]
F=[2,2.5,3,4]
XX=7
FF=lagrange(X,F,XX)